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ATTIC VENTILATION CALCULATIONS - Al <br />Attic Ventilation <br />ATTIC VENTILATION REQUIRED UPPER VENTILATION PROVIDED <br />Attic Ventilation to be in compliance with the Florida Building Code 7th Edition <br />(2020) Residential R806. <br />The Minimum net free ventilating area shall be 1/150 of the area of the vented <br />1/150 Rule 1/300 Rule Off -Ridge Ridge <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />(No Upper Ventilators Vent Amt <br />(Must Provide Upper Ventilators) Amt. <br />but no more than 50% of the required ventilation is provided in the upper portion of <br />Req.) (Ft.) <br />the space to be ventilated.Upper ventilators shall be located no more than 3 feet <br />Total <br />(measured vertically) below the ridge or highest point of the space, with the <br />Ventilation <br />balance of the required ventilation provided by eave or cornice vents. <br />ATTIC Provided <br />SQ. FT. SQ. IN. of by Upper <br />-CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN - <br />SPACE SQ. FT. Total SQ. <br />SQ. IN. of of ventilation to Ventilators <br />(Value to be verified with Manufacturer Specifications) <br />tN of vented IN. of <br />SQ. . of SQ. IN. of <br />ventilation vented be provided Ventilation Ventilation (See Elev) <br />soffit ventilation <br />. OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />. SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SO. FT. <br />required soffit by upper <br />needed required <br />. STUCCO SOFFIT VENTS - 126 SQ. IN. OF NET FREE AREA / SQ. FT. <br />needed ventilators <br />*If not enough vented soffit is provided due to fire protection, the contractor shall use the <br />following approved vents: <br />• LOMANCO DECK -AIR (Shingle Roof) - 9 SQ. IN. OF NET FREE AREA / FT. <br />"Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq, In. Needed) 19 =(Linear Ft, of Deck -Air Needed) <br />Main <br />28 1 <br />Floor <br />2373 2278 325 1139 81 570 558.0 <br />(Zone 1) <br />420.0 138.0 <br />*'NOTE** <br />GENERAL <br />CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FLORIDA BUILDING CODE 7TH EDITION (2020) RESIDENTIAL. <br />0 <br />I <br />I <br />ZONE-1 <br />I <br />I <br />I <br />I <br />ATTIC SPACE <br />I <br />I <br />I <br />I <br />2373 SQ. FT. <br />I <br />I <br />I <br />I <br />I <br />O <br />0 <br />I <br />(Al <br />04 <br />I <br />I <br />I <br />5:12 SLOPF� <br />I <br />I <br />I <br />I- <br />Lu <br />� <br />I <br />> <br />u- <br />RIDGE <br />O <br />;12� SLOPE <br />14'-0' RIDGE VENT <br />n- <br />Q <br />y�A J <br />N <br />1 <br />LID <br />�4 <br />11'-0' RIDGE VENT <br />i <br />RIDGE <br />I <br />W <br />a <br />I i <br />o <br />a <br />0 <br />3'-0 <br />N <br />I <br />I 04 <br />0 <br />I I <br />I <br />I <br />4'-0' RIDGE VENT <br />9 I <br />RIDGE <br />I <br />I <br />I <br />I <br />0- <br />0- <br />I <br />0 <br />to <br />CN <br />r <br />O I <br />I <br />ROOF PLAN — ELEV—Al_ <br />SCALE: Y4"=V-0" <br />N <br />N <br />CD c <br />CV <br />0 o <br />f0 N <br />zsmx <br />4n ell <br />N` W O <br />d <br />co o <br />7 C= T <br />Q ` <br />N <br />Cc t--r <br />Cc o <br />a cf <br />0 <br />tP <br />M1:N ♦• <br />r �°°01 ,0 W %v ride <br />.� S E fj. <br />OFF >,o� <br />SS <br />7�7���''liflltlltlte�E4�°�R <br />To the best of the Engineer's knowledge, information and belief, <br />the structural plans and specifications contained within these <br />drawings comply with the 2020 Florida Building Code - <br />Residential <br />7th Edition. Engineer's signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />I- <br />a 8 <br />N�coo <br />LL <br />M 0 % <br />M y W <br />LL i - <br />a <br />o <br />Z M� <br />0 <br />A Cl <br />W Mr 0 <br />W <br />usZ 0 Nz <br />ZN OU V <br />W F, 17 <br />0 N <br />z <br />z � <br />z <br />J <br />- N <br />V) Z M <br />t/� <br />C1 <br />Q) 0 <br />0 <br />a--+ N <br />-g <br />� A <br />V <br />0^ W s <br />tttf^) C N <br />U„ <br />U <br />• <br />W <br />M <br />0 <br />� <br />0 <br />oLLz® <br />a <br />00 <br />Z <br />gE <br />a=w <br />¢WU <br />�J <br />ro <br />� C <br />o <br />U <br />zz <br />Z <br />j <br />Nm <br />QW <br />f w <br />? <br />U <br />U <br />W <br />,Z 3 <br />u LL <br />j0 <br />a <br />N z <br />F� <br />Q� <br />iIw <br />o= <br />u 3 <br />O//� <br />} <br />X <br />' ^ <br />L• / <br />01 <br />cc <br />0 <br />�^W\\� <br />M <br />T <br />N <br />Y <br />� <br />T <br />m <br />m <br />L0 <br />al <br />O N <br />O <br />04 <br />NT <br />r <br />0) <br />Ln <br />L <br />r <br />d <br />M <br />o <br />Z <br />c <br />��}' <br />E ~ ci <br />a <br />U 1 Q pv <br />JOB <br />NO: 22-06458 <br />SCALE : AS NOTED <br />SHEET NO. <br />5 <br />